Index: propdlg.c
===================================================================
--- propdlg.c	(revision 37070)
+++ propdlg.c	(revision 37071)
@@ -217,58 +217,58 @@
 	}
 }
 
-static void (*help_expose)(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, const rnd_hid_expose_ctx_t *e) = NULL;
+static void (*help_expose)(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, rnd_hid_expose_ctx_t *e) = NULL;
 
-static void help_trace_thickness(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, const rnd_hid_expose_ctx_t *e)
+static void help_trace_thickness(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, rnd_hid_expose_ctx_t *e)
 {
 #	include "help/thickness.c"
 }
 
-static void help_trace_clearance(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, const rnd_hid_expose_ctx_t *e)
+static void help_trace_clearance(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, rnd_hid_expose_ctx_t *e)
 {
 #	include "help/clearance.c"
 }
 
-static void help_text_scale(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, const rnd_hid_expose_ctx_t *e)
+static void help_text_scale(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, rnd_hid_expose_ctx_t *e)
 {
 #	include "help/text_scale.c"
 }
 
-static void help_text_scale_x(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, const rnd_hid_expose_ctx_t *e)
+static void help_text_scale_x(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, rnd_hid_expose_ctx_t *e)
 {
 #	include "help/text_scale_x.c"
 }
 
-static void help_text_scale_y(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, const rnd_hid_expose_ctx_t *e)
+static void help_text_scale_y(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, rnd_hid_expose_ctx_t *e)
 {
 #	include "help/text_scale_y.c"
 }
 
-static void help_text_thickness(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, const rnd_hid_expose_ctx_t *e)
+static void help_text_thickness(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, rnd_hid_expose_ctx_t *e)
 {
 #	include "help/text_thickness.c"
 }
 
-static void help_text_rotation(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, const rnd_hid_expose_ctx_t *e)
+static void help_text_rotation(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, rnd_hid_expose_ctx_t *e)
 {
 #	include "help/text_rot.c"
 }
 
-static void help_arc_angles(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, const rnd_hid_expose_ctx_t *e)
+static void help_arc_angles(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, rnd_hid_expose_ctx_t *e)
 {
 #	include "help/arc_angles.c"
 }
 
-static void help_arc_r(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, const rnd_hid_expose_ctx_t *e)
+static void help_arc_r(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, rnd_hid_expose_ctx_t *e)
 {
 #	include "help/arc_r.c"
 }
 
-static void prop_nil_expose_cb(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, const rnd_hid_expose_ctx_t *e)
+static void prop_nil_expose_cb(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, rnd_hid_expose_ctx_t *e)
 {
 }
 
-static void prop_prv_expose_cb(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, const rnd_hid_expose_ctx_t *e)
+static void prop_prv_expose_cb(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, rnd_hid_expose_ctx_t *e)
 {
 	if (help_expose != NULL)
 		help_expose(attrib, prv, gc, e);
@@ -369,7 +369,7 @@
 	rnd_hid_tree_t *tree = attrib->wdata;
 	propdlg_t *ctx = tree->user_ctx;
 	pcb_props_t *p = NULL;
-	void (*last_help)(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, const rnd_hid_expose_ctx_t *e) = NULL;
+	void (*last_help)(rnd_hid_attribute_t *attrib, rnd_hid_preview_t *prv, rnd_hid_gc_t gc, rnd_hid_expose_ctx_t *e) = NULL;
 	const char *helptxt = NULL;
 
 	last_help = help_expose;